Game Money Transfer?

I just attacked and took over a NPC country last night and I need to transfer money over to it. But I am not sure how to do this. I go to the transfer page and try sending but t says I have 0 SC$ in my account. How do I add money into this account so I can send it to my new Slave Country???

First you have to take it out of your main and into your account (receive game money). Then you can send it out of your account and into the slave (send game money).

Tried that, it says I have to have at least 3T to do something, and IDK why. I just need to transfer like 300B lol.